Rotala sp. 'Vietnam'

Species description

Care, breeding and tankmates

Plant profile

Placement

Midground

Ideally placed in the midground to background, depending on the scale of the aquascape. It looks best when planted in sweeping groups or bushes. Ensure good water flow to deliver nutrients to dense clusters.

Botanical form

Stem

Features fine, needle-like leaves that grow in whorls along the stem. The leaves exhibit a striking golden-green to orange-red color under intense illumination. Its stems grow upright and can become quite dense.

Growth

Fast

Grows rapidly under high light and CO2 injection. It quickly reaches the surface and requires frequent pruning to maintain a desirable shape. In lower light, its growth slows and it becomes greener.

Substrate

Low

Column fertilization

Recommended

Benefits greatly from regular liquid fertilization, particularly iron and micronutrients. Consistent dosing prevents pale new growth and supports its fast metabolism. Maintain adequate potassium levels to prevent pinholes in older leaves.

Root fertilization

None

Thrives in an active soil substrate which provides a steady baseline of nutrients. While water column feeding is primary, root tabs can boost growth in mature setups. Strong root systems develop in soft, nutrient-rich substrates.

Trimming

Occasional

Tolerates aggressive trimming well, responding by producing multiple side shoots. Regular topping is necessary to maintain bushiness and prevent the lower stems from becoming bare. Old stems can be uprooted and replaced with fresh tops.

Propagation

Cuttings

Easily propagated by taking stem cuttings and replanting them. Simply snip the top portion of a healthy stem and insert it into the substrate. The original stem will quickly sprout new lateral branches.

Sensitivity

Moderate

Susceptible to stunting if CO2 levels fluctuate or drop significantly. It can be a target for hair algae if light intensity is high but nutrients or CO2 are lacking. Generally hardier than some of the more delicate Rotala species.

Layout role

Midground, Background

Serves as a fantastic background filler or a vibrant midground focal bush. Its fine texture contrasts beautifully with broad-leaved plants like Anubias or Echinodorus. The golden-red hues add warmth and visual interest to the layout.